11949313 has 4 divisors (see below), whose sum is σ = 12227248. Its totient is φ = 11671380.

The previous prime is 11949307. The next prime is 11949331. The reversal of 11949313 is 31394911.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11949313 - 2⁵ = 11949281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11949373) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 138903 + ... + 138988.

It is an arithmetic number, because the mean of its divisors is an integer number (3056812).

Almost surely, 2^11949313 is an apocalyptic number.

It is an amenable number.

11949313 is a deficient number, since it is larger than the sum of its proper divisors (277935).

11949313 is an equidigital number, since it uses as much as digits as its factorization.

11949313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277934.

The product of its digits is 2916, while the sum is 31.

The square root of 11949313 is about 3456.7778349208. Note that the first 3 decimals coincide. The cubic root of 11949313 is about 228.6200484184.

The spelling of 11949313 in words is "eleven million, nine hundred forty-nine thousand, three hundred thirteen".